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HARADA Tomohiro  原田 知広

… Alternative Names

原田 知広  ハラダ トモヒロ

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Researcher Number 60402773
Other IDs
  • ORCIDhttps://orcid.org/0000-0002-9085-9905
Affiliation (Current) 2022: 立教大学, 理学部, 教授
Affiliation (based on the past Project Information) *help 2019 – 2021: 立教大学, 理学部, 教授
2015 – 2017: 立教大学, 理学部, 教授
2008 – 2014: Rikkyo University, 理学部, 准教授
2006 – 2007: 立教大学, 理学部, 講師
2005: 京都大学, 大学院・理学研究科, 講師(研究機関研究員)
Review Section/Research Field
Principal Investigator
Particle/Nuclear/Cosmic ray/Astro physics / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Except Principal Investigator
Science and Engineering / Particle/Nuclear/Cosmic ray/Astro physics / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics / Transformative Research Areas, Section (II)
Keywords
Principal Investigator
ブラックホール / 一般相対論 / 相対論 / 重力崩壊 / 時空特異点 / 原始ブラックホール / 初期宇宙 / 重力(理論) / 数値相対論 / 暗黒エネルギー … More / 重力理論 / 量子重力 / 量子宇宙論 / インフレーション理論 / 膨張宇宙 / インフレーション宇宙論 / 宇宙論的揺らぎ / 原始密度ゆらぎ / 宇宙論的摂動 / 回転ブラックホール / 重力波 / スピン … More
Except Principal Investigator
重力レンズ / 原始ブラックホール / 重力波 / インフレーション / 輻射反作用 / 数値相対論 / 中性子星 / カーター定数 / ガンマ線バースト / BBO / DECIGO / ダークエネルギー / 重力波メモリー効果 / ポストニュートン展開 / ブレーンワールド / 重力理論 / γ線バースト / 一般相対論 / ブラックホール / 宇宙物理 / 相対論 / 重力 / 宇宙論 / 相対性理論 / 一般相対性理論 / ワームホール / ダークマター Less
  • Research Projects

    (8 results)
  • Research Products

    (235 results)
  • Co-Researchers

    (22 People)
  •  Investigation of primordial black holes and macroscopic dark matter

    • Principal Investigator
      柳 哲文
    • Project Period (FY)
      2020 – 2024
    • Research Category
      Grant-in-Aid for Transformative Research Areas (A)
    • Review Section
      Transformative Research Areas, Section (II)
    • Research Institution
      Nagoya University
  •  Theoretical study of the mass and angular momentum distribution of primordial black holes

    • Principal Investigator
      柳 哲文
    • Project Period (FY)
      2019 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      Nagoya University
  •  Theoretical prediction for the spin of primordial black holesPrincipal Investigator

    • Principal Investigator
      原田 知広
    • Project Period (FY)
      2019 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      Rikkyo University
  •  Formation of Primordial Black Holes in the Matter-Dominated Era of the UniversePrincipal Investigator

    • Principal Investigator
      HARADA Tomohiro
    • Project Period (FY)
      2014 – 2017
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Rikkyo University
  •  Observational tests of wormholes

    • Principal Investigator
      ABE Fumio
    • Project Period (FY)
      2011 – 2013
    • Research Category
      Grant-in-Aid for Challenging Exploratory Research
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Nagoya University
  •  Gravitational collapse and spacetime singularities in quantum gravityPrincipal Investigator

    • Principal Investigator
      HARADA Tomohiro
    • Project Period (FY)
      2009 – 2012
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Rikkyo University
  •  Application of spectral methods to high-accuracy numerical relativityPrincipal Investigator

    • Principal Investigator
      HARADA Tomohiro
    • Project Period (FY)
      2006 – 2008
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Particle/Nuclear/Cosmic ray/Astro physics
    • Research Institution
      Rikkyo University
  •  重力波源と波形の研究

    • Principal Investigator
      中村 卓史
    • Project Period (FY)
      2002 – 2005
    • Research Category
      Grant-in-Aid for Scientific Research on Priority Areas
    • Review Section
      Science and Engineering
    • Research Institution
      Kyoto University

All 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Other

All Journal Article Presentation Book

  • [Book] 宇宙まるごとQ & A: はやぶさ2からブラックホールまで2021

    • Author(s)
      北本俊二, 原田知広, 亀田真吾
    • Total Pages
      196
    • Publisher
      理工図書
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe2021

    • Author(s)
      Allahverdi Rouzbeh、... Takahashi Tomo、.... et al
    • Journal Title

      The Open Journal of Astrophysics

      Volume: 4 Pages: 1-1

    • DOI

      10.21105/astro.2006.16182

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03874, KAKENHI-PROJECT-19K03876, KAKENHI-PUBLICLY-19H05114, KAKENHI-PUBLICLY-20H04750
  • [Journal Article] Spins of Primordial Black Holes Formed in the Radiation-dominated Phase of the Universe: First-order Effect2021

    • Author(s)
      Harada Tomohiro、Yoo Chul-Moon、Kohri Kazunori、Koga Yasutaka、Monobe Takeru
    • Journal Title

      The Astrophysical Journal

      Volume: 908 Pages: 140-140

    • DOI

      10.3847/1538-4357/abd9b9

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K03876, KAKENHI-PUBLICLY-19H05114, KAKENHI-PUBLICLY-20H04750, KAKENHI-PROJECT-19J12007
  • [Journal Article] Uniqueness of static, isotropic low- pressure solutions of the Einstein-Vlasov system2020

    • Author(s)
      Tomohiro Harada, Maximilian Thaller
    • Journal Title

      Lett. Math. Phys.

      Volume: 110

    • DOI

      10.1007/s11005-020-01284-y

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] Sonic point and photon surface2020

    • Author(s)
      Tsuchiya Masataka、Yoo Chul-Moon、Koga Yasutaka、Harada Tomohiro
    • Journal Title

      Physical Review D

      Volume: 102 Pages: 044057-044057

    • DOI

      10.1103/physrevd.102.044057

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K03876, KAKENHI-PROJECT-19H01895, KAKENHI-PROJECT-19J12007
  • [Journal Article] Threshold of primordial black hole formation in nonspherical collapse2020

    • Author(s)
      Yoo Chul-Moon、Harada Tomohiro、Okawa Hirotada
    • Journal Title

      Physical Review D

      Volume: 102

    • DOI

      10.1103/physrevd.102.043526

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] Escape probability of a photon emitted near the black hole horizon2020

    • Author(s)
      Kota Ogasawara, Takahisa Igata, Tomohiro Harada, Umpei Miyamoto
    • Journal Title

      Physical Review D

      Volume: 101 Pages: 044023-044023

    • DOI

      10.1103/physrevd.101.044023

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03652, KAKENHI-PROJECT-19K03876, KAKENHI-PROJECT-19K14715, KAKENHI-PROJECT-18J10275
  • [Journal Article] Extremal Kerr white holes as a source of ultrahigh energy particles2020

    • Author(s)
      Patil Mandar、Harada Tomohiro
    • Journal Title

      Physical Review D

      Volume: 102

    • DOI

      10.1103/physrevd.102.024002

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] Thin-Shell Wormholes in Einstein and Einstein-Gauss-Bonnet Theories of Gravity2020

    • Author(s)
      Kokubu Takafumi、Harada Tomohiro
    • Journal Title

      Universe

      Volume: 6

    • DOI

      10.3390/universe6110197

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] Abundance of primordial black holes in peak theory for an arbitrary power spectrum2020

    • Author(s)
      Yoo Chul-Moon、Harada Tomohiro、Hirano Shin’ichi、Kohri Kazunori
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2021 Pages: 1300-1300

    • DOI

      10.1093/ptep/ptaa155

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K03876, KAKENHI-PUBLICLY-19H05114, KAKENHI-PUBLICLY-20H04750
  • [Journal Article] Dynamical transition from a naked singularity to a black hole2020

    • Author(s)
      Hioki Kenta、Harada Tomohiro
    • Journal Title

      International Journal of Modern Physics A

      Volume: 35

    • DOI

      10.1142/s0217751x20502012

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] Particle creation in gravitational collapse to a horizonless compact object2019

    • Author(s)
      Harada Tomohiro、Cardoso Vitor、Miyata Daiki
    • Journal Title

      Physical Review D

      Volume: 99

    • DOI

      10.1103/physrevd.99.044039

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] Stability of null orbits on photon spheres and photon surfaces2019

    • Author(s)
      Koga Yasutaka、Harada Tomohiro
    • Journal Title

      Physical Review D

      Volume: 100

    • DOI

      10.1103/physrevd.100.064040

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19K03876, KAKENHI-PROJECT-19J12007
  • [Journal Article] Bursts of particle creation in gravitational collapse to a horizonless compact object2019

    • Author(s)
      Kokubu Takafumi、Harada Tomohiro
    • Journal Title

      Physical Review D

      Volume: 100

    • DOI

      10.1103/physrevd.100.084028

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Journal Article] On the stability of a superspinar2018

    • Author(s)
      Nen-ichi Nakao, Pankaj S. Joshi, Jun-Qi Guo, Prashant Kocherlakota, Hideyuki Tagoshi, Tomohiro Harada, Mandar Patil, Andrzej Krolak
    • Journal Title

      Physics Letters B

      Volume: 780 Pages: 410-413

    • DOI

      10.1016/j.physletb.2018.03.014

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K05081, KAKENHI-PROJECT-26400282
  • [Journal Article] Complete conformal classification of the Friedmann-Lematre-Robertson-Walker solutions with a linear equation of state2018

    • Author(s)
      Harada Tomohiro、Carr B J、Igata Takahisa
    • Journal Title

      Classical and Quantum Gravity

      Volume: 35 Pages: 105011-105011

    • DOI

      10.1088/1361-6382/aab99f

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] Energy emission from high curvature region and its backreation2018

    • Author(s)
      Kokubu Takafumi, Jhingan Sanjay, Harada Tomohiro
    • Journal Title

      Physical Review D

      Volume: -

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] Light curves of light rays passing through a wormhole2017

    • Author(s)
      Naoki Tsukamoto, Tomohiro Harada
    • Journal Title

      Phys.Rev.

      Volume: D95

    • DOI

      10.1103/physrevd.95.024030

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] 3D simulation of spindle gravitational collapse of a collisionless particle system2017

    • Author(s)
      Chul-Moon Yoo, Tomohiro Harada, Hirotada Okawa
    • Journal Title

      Classical and Quantum Gravity

      Volume: 34 Pages: 105010-105010

    • DOI

      10.1088/1361-6382/aa6ad5

    • Peer Reviewed
    • Data Source
      KAKENHI-PUBLICLY-16H01097, KAKENHI-PROJECT-16K17688, KAKENHI-PROJECT-26400282
  • [Journal Article] Escape probability of the super-Penrose process2017

    • Author(s)
      Kota Ogasawara, Tomohiro Harada, Umpei Miyamoto, Takahisa Igata, Mandar Patil
    • Journal Title

      Physical Review D

      Volume: 95 (2017) no.12, 124019 Pages: 124019-124019

    • DOI

      10.1103/physrevd.95.124019

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K05086, KAKENHI-PROJECT-26400282
  • [Journal Article] Spins of primordial black holes formed in the matter-dominated phase of the Universe2017

    • Author(s)
      Tomohiro Harada, Chul-Moon Yoo, Kazunori Kohri, Ken-ichi Nakao
    • Journal Title

      Physical Review D

      Volume: 96 Pages: 083517-083517

    • DOI

      10.1103/physrevd.96.083517

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-16K17688, KAKENHI-PLANNED-15H05889, KAKENHI-PUBLICLY-16H00877, KAKENHI-PUBLICLY-16H01097, KAKENHI-PROJECT-17H01131, KAKENHI-PROJECT-26247042, KAKENHI-PROJECT-26400282, KAKENHI-PLANNED-17H06359
  • [Journal Article] Self-similar motion of a Nambu-Goto string2016

    • Author(s)
      Takahisa Igata, Tsuyoshi Houri, Tomohiro Harada
    • Journal Title

      Phys. Rev.

      Volume: 94 Pages: 064029-064029

    • DOI

      10.1103/physrevd.94.064029

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-14J01237, KAKENHI-PROJECT-26400282
  • [Journal Article] Primordial black hole formation in the matter-dominated phase of the Universe2016

    • Author(s)
      T.~Harada, C.~M.~Yoo, K.~Kohri, K.~i.~Nakao and S.~Jhingan
    • Journal Title

      Astrophys. J.

      Volume: 833 Pages: 1-61

    • DOI

      10.3847/1538-4357/833/1/61

    • Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-15H05889, KAKENHI-PUBLICLY-16H00877, KAKENHI-PUBLICLY-16H01097, KAKENHI-PROJECT-26247042, KAKENHI-PROJECT-25400265, KAKENHI-PROJECT-26400282, KAKENHI-PROJECT-16K17688
  • [Journal Article] Vacuum excitation by sudden appearance and disappearance of a Dirichlet wall in a cavity2016

    • Author(s)
      Tomohiro Harada, Shunichiro Kinoshita, Umpei Miyamoto
    • Journal Title

      Phys. Rev.

      Volume: 94 Pages: 1-17

    • DOI

      10.1103/physrevd.94.025006

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15K05086, KAKENHI-PROJECT-26400282
  • [Journal Article] High efficiency of collisional Penrose process requires heavy particle production2016

    • Author(s)
      K. Ogasawara, T. Harada, and U. Miyamoto
    • Journal Title

      Phys. Rev. D

      Volume: 93 Pages: 044054-044054

    • DOI

      10.1103/physrevd.93.044054

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15K05086, KAKENHI-PROJECT-26400282
  • [Journal Article] Correspondence between sonic points of ideal photon gas accretion and photon spheres2016

    • Author(s)
      Yasutaka Koga and Tomohiro Harada
    • Journal Title

      Phys. Rev.

      Volume: D94

    • DOI

      10.1103/physrevd.94.044053

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] Infinite efficiency of the collisional Penrose process: Can a overspinning Kerr geometry be the source of ultrahigh-energy cosmic rays and neutrinos?2016

    • Author(s)
      Mandar Patil, Tomohiro Harada, Ken-ichi Nakao, Pankaj S. Joshi, Masashi Kimura
    • Journal Title

      Phys. Rev.

      Volume: 93

    • DOI

      10.1103/physrevd.93.104015

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25400265, KAKENHI-PROJECT-26400282
  • [Journal Article] Spherical and nonspherical models of primordial black hole formation: exact solutions2016

    • Author(s)
      Tomohiro Harada and Sanjay Jhingan
    • Journal Title

      Prog.Theor.Exp.Phys.

      Volume: 2016

    • DOI

      10.1093/ptep/ptw123

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] Consistent analytic approach to the efficiency of collisional Penrose process2016

    • Author(s)
      Tomohiro Harada, Kota Ogasawara, Umpei Miyamoto
    • Journal Title

      Phys. Rev.

      Volume: 94 Pages: 1-8

    • DOI

      10.1103/physrevd.94.024038

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15K05086, KAKENHI-PROJECT-26400282
  • [Journal Article] Timescale for trans-Planckian collisions in Kerr spacetime2015

    • Author(s)
      Mandar Patil, Pankaj S. Joshi, Ken-ichi Nakao, Masashi Kimura, Tomohiro Harada
    • Journal Title

      Europhys. Lett.

      Volume: 110 Pages: 30004-30004

    • DOI

      10.1209/0295-5075/110/30004

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25400265, KAKENHI-PROJECT-26400282
  • [Journal Article] Does the Gauss- Bonnet term stabilize wormholes?2015

    • Author(s)
      Takafumi Kokubu, Hideki Maeda and Tomohiro Harada
    • Journal Title

      Class. Quant. Grav.

      Volume: 32 Pages: 235021-235021

    • DOI

      10.1088/0264-9381/32/23/235021

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] Negative tension branes as sta- ble thin shell wormholes2015

    • Author(s)
      Takafumi Kokubu and Tomohiro Harada
    • Journal Title

      Class. Quant. Grav.

      Volume: 32 Pages: 205001-205001

    • DOI

      10.1088/0264-9381/32/20/205001

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] The separate universe problem: 40 years on2015

    • Author(s)
      B. J. Carr and Tomohiro Harada
    • Journal Title

      Phys. Rev. D

      Volume: 91(8)

    • DOI

      10.1103/physrevd.91.084048

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] Cosmological long-wavelength solutions and primordial black hole formation2015

    • Author(s)
      Tomohiro Harada, Chul-Moon Yoo, Tomohiro Nakama and Yasutaka Koga
    • Journal Title

      Phys. Rev. D

      Volume: 91(8) Pages: 1-25

    • DOI

      10.1103/physrevd.91.084057

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282, KAKENHI-PROJECT-13J08199
  • [Journal Article] Black holes as particle accelerators: a brief review2014

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Journal Title

      Class. Quant. Grav.

      Volume: 31

    • DOI

      10.1088/0264-9381/31/24/243001

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Journal Article] How small can an over-spinning body be in general relativity?2014

    • Author(s)
      Ken-ichi Nakao, Masashi Kimura, Tomohiro Harada, Mandar Patil, Pankaj S. Joshi
    • Journal Title

      Phys. Rev. D

      Volume: 90 Pages: 124079-124079

    • DOI

      10.1103/physrevd.90.124079

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-25400265, KAKENHI-PROJECT-26400282
  • [Journal Article] Wave Effect in Gravitational Lensing by the Ellis Wormhole2013

    • Author(s)
      Chul-Moon Yoo, Tomohiro Harada, Naoki Tsukamoto
    • Journal Title

      Physical Review D

      Volume: 未定

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Journal Article] Renormalization group approach to Einstein-Rosen waves2013

    • Author(s)
      Tomohiro Harada and Sanjay Jhingan
    • Journal Title

      Physical Review D

      Volume: D87 Pages: 64043-64043

    • DOI

      10.1103/physrevd.87.064043

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Weak cosmic censorship in gravitational collapse with astrophysical parameter values2013

    • Author(s)
      Umpei Miyamoto, Sanjay Jhingan, Tomohiro Harada
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 未定

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Signed magnification sums for spherical lenses2013

    • Author(s)
      Naoki Tsukamoto and Tomohiro Harada
    • Journal Title

      Physical Review D

      Volume: 87

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Journal Article] ブラックホールは天然の粒子加速器になるか2013

    • Author(s)
      原田知広、木村匡志
    • Journal Title

      日本物理学

      Volume: 第68巻第2号 Pages: 102-102

    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Wave Effect in Gravitational Lensing by the Ellis Wormhole2013

    • Author(s)
      Chul-Moon Yoo, Tomohiro Harada, Naoki Tsukamoto
    • Journal Title

      Phys. Rev.

      Volume: 未定

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Wave Effect in Gravitational Lensing by the Ellis Wormhole2013

    • Author(s)
      Chul-Moon Yoo, Tomohiro Harada and Naoki Tsukamoto
    • Journal Title

      Phys. Rev

      Volume: D87(8)

    • DOI

      10.1103/physrevd.87.084045

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Journal Article] Signed magnification sums for general spherical lenses2013

    • Author(s)
      Naoki Tsukamoto and Tomohiro Harada
    • Journal Title

      Phys. Rev. D

      Volume: 87(2) Pages: 6-6

    • URL

      http://dx.doi.org/10.1103/PhysRevD.87.024024

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Renormalization groupapproach to Einstein-Rosen waves2013

    • Author(s)
      Tomohiro Harada and Sanjay Jhingan
    • Journal Title

      Phys. Rev. D

      Volume: 87(6) Pages: 7-7

    • URL

      http://dx.doi.org/10.1103/PhysRevD.87.064043

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Threshold of primordial black hole formation2013

    • Author(s)
      Tomohiro Harada, Chul-Moon Yoo, and Kazunori Kohri
    • Journal Title

      Phys. Rev

      Volume: 88 Pages: 84051-84051

    • DOI

      10.1103/physrevd.88.084051

    • Peer Reviewed
    • Data Source
      KAKENHI-PLANNED-21111006, KAKENHI-PROJECT-22244030, KAKENHI-PROJECT-23540327, KAKENHI-PROJECT-23654082
  • [Journal Article] Weak cosmic censorship in gravitational collapse with astrophysical parameter values2013

    • Author(s)
      Umpei Miyamoto, Sanjay Jhingan, Tomohiro Harada
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 未定

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Journal Article] Signed magnification sums for general spherical lenses2013

    • Author(s)
      Naoki Tsukamoto and Tomohiro Harada
    • Journal Title

      Phys. Rev

      Volume: D87 Pages: 24024-24024

    • DOI

      10.1103/physrevd.87.024024

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Can we distinguish between black holes and wormholes by their Einstein ring systems?2012

    • Author(s)
      Naoki Tsukamoto, Tomohiro Harada and Kohji Yajima
    • Journal Title

      Phys. Rev

      Volume: D86 Pages: 104062-104062

    • DOI

      10.1103/physrevd.86.104062

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Can we distinguish between black hole and wormhole by their Einstein ring systems?2012

    • Author(s)
      Naoki Tsukamoto, Tomohiro Harada, and Koji Yajima
    • Journal Title

      Physical Review D

      Volume: 86

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Journal Article] Effect of a weak electromagnetic field on particle acceleration by a rotating black hole2012

    • Author(s)
      T. Igata, T. Harada, M. Kimura
    • Journal Title

      Phys. Rev.

      Volume: 85 Pages: 104028-104028

    • DOI

      10.1103/physrevd.85.104028

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-11J02182, KAKENHI-PROJECT-11J08747, KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Effect of a weak electromagnetic field on particle acceleration by a rotating black hole2012

    • Author(s)
      Takahisa Igata, Tomohiro Harada and Masashi Kimura
    • Journal Title

      Phys. Rev. D

      Volume: 85(10) Pages: 11-11

    • URL

      http://dx.doi.org/10.1103/PhysRevD.85.104028

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Can we distinguish between black holes and wormholes by their Einstein ring systems2012

    • Author(s)
      Naoki Tsukamoto, Tomohiro Harada and Kohji Yajima
    • Journal Title

      Phys. Rev. D

      Volume: 86(10) Pages: 6-6

    • URL

      http://dx.doi.org/10.1103/PhysRevD.86.104062

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Upper limits of particle emission from high-energy collision and reaction near a maximally rotating Kerr black hole2012

    • Author(s)
      Tomohiro Harada, Hiroya Nemoto and Umpei Miyamoto
    • Journal Title

      Physical Review D

      Volume: D86 Pages: 024027-069902

    • DOI

      10.1103/physrevd.86.024027

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Upperlimits of particle emission from high-energy collision and reaction near a maximally rotating Kerr black hole2012

    • Author(s)
      Tomohiro Harada, Hiroya Nemoto and Umpei Miyamoto
    • Journal Title

      Phys. Rev. D

      Volume: 86(2) Pages: 1-1

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Collision of an object in the transition from adiabatic inspiral to plunge around a Kerr black hole2011

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Journal Title

      Phys. Rev. D

      Volume: 84(12) Pages: 8-8

    • URL

      http://dx.doi.org/10.1103/PhysRevD.84.124032

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Uniqueness of static spherically symmetric vacuum solutions in the IR limit of nonrelativistic quantum gravity2011

    • Author(s)
      Tomohiro Harada, Umpei Miyamoto and Naoki Tsukamoto
    • Journal Title

      J. Phys.: Conf. Ser

      Volume: 314

    • URL

      http://dx.doi.org/10.1088/1742-6596/314/1/012120

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Uniqueness of static spherically symmetric vacuum solutions in the IR limit of Horava-Lifshitz gravity2011

    • Author(s)
      Tomohiro Harada, Umpei Miyamoto and Naoki Tsukamoto
    • Journal Title

      Int. J.Mod. Phys.D

      Volume: 20(1) Pages: 111-118

    • URL

      http://dx.doi.org/10.1142/S021827181101865

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Discretisation parameter and operator ordering in loop quantum cosmology with the cosmological constant2011

    • Author(s)
      Tomo Tanaka, Fumitoshi Amemiya, Masahiro Shimano, Tomohiro Harada, Takashi Tamaki
    • Journal Title

      Physical Review D

      Volume: 83

    • DOI

      10.1103/physrevd.83.104049

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Uniqueness of static spherically symmetric vacuum solutions in the IR limit of Horava-Lifshitz gravity2011

    • Author(s)
      Tomohiro Harada, Umpei Miyamoto, Naoki Tsukamoto
    • Journal Title

      Int.J.Mod.Phys.D

      Volume: 20 Pages: 111-118

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Black hole candidates and the Kerr bound2011

    • Author(s)
      Tomohiro Harada, Rohta Takahashi
    • Journal Title

      J.Phys. :Conf.Ser.

      Volume: 314

    • DOI

      10.1088/1742-6596/314/1/012084

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Collision of an innermost stable circular orbit particle around a Kerrblack hole2011

    • Author(s)
      Tomohiro Harada, Masashi Kimura
    • Journal Title

      Phys.Rev.D

      Volume: 83

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Collision of an object in the transition from adiabatic inspiral to plunge around a Kerr black hole2011

    • Author(s)
      原田知広, 木村匡志
    • Journal Title

      Phys.Rev.D

      Volume: 84

    • DOI

      10.1103/physrevd.84.124032

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-11J02182, KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Collision of two general geodesic particles around a Kerr black hole2011

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Journal Title

      Phys. Rev. D

      Volume: 83(8) Pages: 9-9

    • URL

      http://dx.doi.org/10.1103/PhysRevD.83.084041

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Collision of an innermost stable circular orbit particle around a Kerr black hole2011

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Journal Title

      Phys. Rev. D

      Volume: 83(2) Pages: 11-11

    • URL

      http://dx.doi.org/10.1103/PhysRevD.83.024002

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Collision of two general geodesic particles around a Kerr black hole2011

    • Author(s)
      Tomohiro Harada, Masashi Kimura
    • Journal Title

      Physical Review D

      Volume: 83

    • DOI

      10.1103/physrevd.83.084041

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190, KAKENHI-PROJECT-23654082
  • [Journal Article] Discretisation parameter and operator ordering in loop quantum cosmology with the cosmological constant2011

    • Author(s)
      Tomo Tanaka, Fumitoshi Amemiya, Masahiro Shimano, Tomohiro Harada and Takashi Tamaki
    • Journal Title

      Phys. Rev. D

      Volume: 83(10) Pages: 14-14

    • URL

      http://dx.doi.org/10.1103/PhysRevD.83.104049

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Uniqueness of static spherically symmetric vacuum solutions in the IR limit of nonrelativistic quantum gravity2011

    • Author(s)
      Tomohiro Harada, Umpei Miyamoto, Naoki Tsukamoto
    • Journal Title

      J.Phys. :Conf.Ser.

      Volume: 314

    • DOI

      10.1088/1742-6596/314/1/012120

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Observational Testability of Kerr bound in X-ray Spectrum of Black-Hole Candidates2011

    • Author(s)
      Rohta Takahashi and Tomohiro Harada
    • Journal Title

      Class. Quant. Grav.

      Volume: 27(7) Pages: 21-21

    • URL

      http://dx.doi.org/10.1088/0264-9381/27/7/075003

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Visible borders of spacetime generated by high-energy collisions2010

    • Author(s)
      Ken-ichi Nakao, Tomohiro Harada and Umpei Miyamoto
    • Journal Title

      Phys. Rev. D

      Volume: 82(12) Pages: 4-4

    • URL

      http://dx.doi.org/10.1103/PhysRevD.82.121501

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Visible borders of spacetime generated by high-energy collisions2010

    • Author(s)
      Ken-ichi Nakao, Tomohiro Harada, Umpei Miyamoto
    • Journal Title

      Phys.Rev.D

      Volume: 82

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Can a primordial black hole or wormhole grow as fast as the universe2010

    • Author(s)
      B.J. Carr, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Class. Quant. Grav.

      Volume: 27(18) Pages: 28-28

    • URL

      http://dx.doi.org/10.1088/0264-9381/27/18/183101

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Can a primordial black hole or wormhole grow as fast as the universe?2010

    • Author(s)
      B.J.Carr, Tomohiro Harada, Hideki Maeda
    • Journal Title

      Class.Quant.Grav.

      Volume: 27

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Outflows from accreting super-spinars2010

    • Author(s)
      Cosimo Bambi, Tomohiro Harada, Rohta Takahashi, Naoki Yoshida
    • Journal Title

      Phys.Rev.D

      Volume: 81

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Black hole candidates and the Kerr bound2010

    • Author(s)
      Tomohiro Harada and Rohta Takahashi
    • Journal Title

      J. Phys.: Conf. Ser. (2011), as a contribution to the Proceedings of Spanish Relativity Meeting (ERE 2010): Gravity as a Crossroad in Physics

      Volume: 314 Pages: 6-10

    • URL

      http://dx.doi.org/10.1088/1742-6596/314/1/012084

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Outflows from accreting super-spinars2010

    • Author(s)
      Cosimo Bambi, Tomohiro Harada, RohtaTakahashi and Naoki Yoshida
    • Journal Title

      Phys. Rev. D

      Volume: 81(10) Pages: 12-12

    • URL

      http://dx.doi.org/10.1103/PhysRevD.81.104004

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Observational Testability of Kerr bound in X-ray Spectrum of Black-Hole Candidates2010

    • Author(s)
      Rohta Takahashi, Tomohiro Harada
    • Journal Title

      Class.Quant.Grav. 27

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Einstein-Rosen waves and the self-similarity hypothesis in cylindrical symmetry2009

    • Author(s)
      Tomohiro Harada, Ken-ichi Nakao, Brien C.Nolan
    • Journal Title

      Phys.Rev.D 80

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Observational constraints on a power spectrum from super-inflation in Loop Quantum Cosmology2009

    • Author(s)
      Masahiro Shimano, Tomohiro Harada
    • Journal Title

      Phys.Rev.D 80

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Self-similar black holes in an accelerated universe2009

    • Author(s)
      Tomohiro Harada
    • Journal Title

      AIP Conf.Proc. 1122

      Pages: 288-291

    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] High-Speed Collapse of a Hollow Sphere of Type I Matter2009

    • Author(s)
      Zahid Ahmed, Tomohiro Harada, Ken-ichi Nakao and M. Sharif
    • Journal Title

      Class. Quantum Gray 26

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Cosmological wormholes2009

    • Author(s)
      Hideki Maeda, Tomohiro Harada, B.J. Carr
    • Journal Title

      Phys. Rev D79

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Self-similar black holes in an accelerated universe2009

    • Author(s)
      Tomohiro Harada
    • Journal Title

      AIP Conf. Proc. (Physics and Mathematics of Gravitation: the Proceedings of the Spanish Relativity Meeting 2008, 15 - 19 Sep 2008, Salamanca, Spain", ed. K.E. Kunze, M. Mars and M.A. Vazquez-Mozo, (American Insitute of Physics, New York, 2009))

      Volume: 1122 Pages: 288-291

    • URL

      http://dx.doi.org/10.1063/1.3141296

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Observational constraints on a power spectru from super-inflation in Loop Quantum Cosmology2009

    • Author(s)
      Masahiro Shimano and Tomohiro Harada,''
    • Journal Title

      Phys. Rev. D

      Volume: 80(6) Pages: 17-17

    • URL

      http://dx.doi.org/10.1103/PhysRevD.80.063538

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Relativistic Gravitational Collapse of a Cylindrical Shell of Dust II: SettlingDown Boundary Condition2009

    • Author(s)
      Ken-ichi Nakao, Tomohiro Harada, Yasunari Kurita and Yoshiyuki Morisawa
    • Journal Title

      Prog. Theor. Phys.

      Volume: 122(2) Pages: 521-541

    • URL

      http://dx.doi.org/10.1143/PTP.122.521

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Cosmological wormholes2009

    • Author(s)
      Hideki Maeda, Tomohiro Harada and B. J. Carr
    • Journal Title

      Phys. Rev D79(4),044034

      Pages: 10-10

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] High-Speed Collapse of a Hollow Sphere of Type I Matter2009

    • Author(s)
      Zahid Ahmed, Tomohiro Harada, Ken-ichi Nakao and M. Sharif
    • Journal Title

      Class. Quantum Grav 26(3),035007

      Pages: 15-15

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Einstein-Rosen waves and the self-similarity hypothesis in cylindrical symmetry2009

    • Author(s)
      Tomohiro Harada, Ken-ichi Nakao and Brien C. Nolan
    • Journal Title

      Phys. Rev. D

      Volume: 80(2) Pages: 15-15

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Lemaitre-Tolman-Bondi collapse from the perspective of loop quantum gravity2009

    • Author(s)
      Martin Bojowald, Tomohiro Harada and Rakesh Tibrewala
    • Journal Title

      Phys. Rev D78

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Relativistic Gravitational Collapse of a Cylindrical Shell of Dust II : Settling Down Boundary Condition2009

    • Author(s)
      Ken-ichi Nakao, Tomohiro Harada, Yasunari Kurita, Yoshiyuki Morisawa
    • Journal Title

      Prog.Theor.Phys. 122

      Pages: 521-541

    • NAID

      110007339479

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Singularities and self-similarity in gravitational collapse2009

    • Author(s)
      Tomohiro Harada
    • Journal Title

      Advanced Studies in Pure Mathematics 55

      Pages: 15-30

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Accretion process onto super-spinning objects2009

    • Author(s)
      Cosimo Bambi, Katherine Freese, Tomohiro Harada, Rohta Takahashi, Naoki Yoshida
    • Journal Title

      Phys.Rev.D 80

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Singularities and self-similarity in gravitational collapse2009

    • Author(s)
      Tomohiro Harada
    • Journal Title

      a plenary talk given at the Hayashibara Forum at IHES on Singularities, 20-23 Nov 2006, Bures-sur-Yvette, France, to appear in the Advanced Study in Pure Mathematics (掲載決定)

      Pages: 15-15

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Singularities and self-similarity in gravitational collapse'2009

    • Author(s)
      Tomohiro Harada
    • Journal Title

      a plenary talk given at the Hayashibara Forum at IHES on Singularities, 20-23 Nov 2006, Bures-sur-Yvette, France, Advanced Studies in Pure Mathematics

      Volume: 55 Pages: 15-30

    • URL

      http://arxiv.org/abs/arXiv:0904.4770

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Accretion process onto super-spinning objects2009

    • Author(s)
      Cosimo Bambi, Katherine Freese, Tomohiro Harada, Rohta Takahashi and Naoki Yoshida
    • Journal Title

      Phys. Rev. D

      Volume: 80(10) Pages: 10-10

    • URL

      http://dx.doi.org/10.1103/PhysRevD.80.104023

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Self-similar cosmological solutions with dark energy II : black holes, naked singularities and wormholes2008

    • Author(s)
      Hideki Maeda, Tomohiro Harada and B. J. Carr
    • Journal Title

      Phys. Rev D77(2),024023

      Pages: 12-12

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Black Holes in Scalar Field or Quintessential Cosmology2008

    • Author(s)
      Tomohiro Harada
    • Journal Title

      Proceedings of the Eleventh Marcel Grossmann Meeting on General Relativity

      Pages: 1113-1115

    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Black Hole Evaporation in a Friedmann Universe2008

    • Author(s)
      Tomohiro Harada
    • Journal Title

      PRESS SECTION OF ICGA8, NARA WOMEN' S UNIVERSITY

      Pages: 21-22

    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Asymptotically Friedmann self-similar scalar field solutions with potential2008

    • Author(s)
      Masanori Kyo, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Phys. Rev D77(12),124036

      Pages: 10-10

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Lemaitre-Tolman-Bondi collapse from the perspective of loop quantum gravity2008

    • Author(s)
      Martin Bojowald, Tomohiro Harada and Rakesh Tibrewala
    • Journal Title

      Phys. Rev D78(6),064057

      Pages: 30-30

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Self-similar cosmological solutions with dark energy II: black holes, naked singularities and wormholes2008

    • Author(s)
      Hideki Maeda, Tomohiro Harada and B.J. Carr
    • Journal Title

      Phys. Rev. D 77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Asymptotically Friedmann self-similar scalar field solutions with potential2008

    • Author(s)
      Masanori Kyo, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Phys. Rev D77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Self-similar Cosmological Solutions with Dark Energy I : Formalism and Asymptotic Analysis2008

    • Author(s)
      Tomohiro Harada
    • Journal Title

      PRESS SECTION OF ICGA8, NARA WOMEN' S UNIVERSITY

      Pages: 19-20

    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Self-similar cosmological solutions with dark energy I: formulation and asymptotic analysis2008

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B.J. Carr
    • Journal Title

      Phys. Rev. D 77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Self-similar cosmological solutions with dark energy I : formulation and asymptotic analysis2008

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Journal Title

      Phys. Rev D77(2),024022

      Pages: 13-13

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Analytical solutions for black-hole critical behaviour2007

    • Author(s)
      Tomohiro Harada and Ashutosh Mahajan
    • Journal Title

      Gen. Rel. Grav 39

      Pages: 1847-1854

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Relativistic Gravitational Collapse of Cylindrical Dust2007

    • Author(s)
      Ken-ichi Nakao, Yasunari Kurita, Yoshiyuki Morisawa and Tomohiro Harada
    • Journal Title

      Prog. Theor. Phys 117(1)

      Pages: 75-102

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Black Hole Evaporation in an Expanding Universe2007

    • Author(s)
      Hiromi Saida, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Class. Quantum Grav. 24

      Pages: 4711-4732

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Critical Collapse of Einstein Cluster2007

    • Author(s)
      Ashutosh Mahajan, Tomohiro Harada, Pankaj S. Joshi and Ken-ichi Nakao
    • Journal Title

      Progress of Theoretical Physics 118

      Pages: 865-878

    • NAID

      110006473317

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Critical Collapse of Einstein Cluster2007

    • Author(s)
      Ashutosh Mahajan, Tomohiro Harada, Pankaj S. Joshi and Ken-ichi Nakao
    • Journal Title

      Prog. Theor. Phys 118(5)

      Pages: 865-878

    • NAID

      110006473317

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Analytical solutions for black-hole critical behaviour2007

    • Author(s)
      Tomohiro Harada and Ashutosh Mahajan
    • Journal Title

      Gen. Rel. Grav. 39

      Pages: 1847-1854

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Black Hole Evaporation in an Expanding Universe2007

    • Author(s)
      Hiromi Saida, Tomohiro Harada and Hideki Maeda
    • Journal Title

      Class. Quantum Grav 24(18)

      Pages: 4711-4732

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Non-existence of self-similar solutions containing a black hole in a universe with a stiff fluid or scalar field or quintessence2006

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Journal Title

      Phys. Rev D74(2),024024

      Pages: 17-17

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Non-existence of self-similar solutions containing a black hole in a universe with a stiff fluid or scalar field or quintessence2006

    • Author(s)
      Tomohiro Harada
    • Journal Title

      Physical Review D74(2)

      Pages: 24024-24024

    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Is there a black hole minimum mass?2006

    • Author(s)
      Tomohiro Harada
    • Journal Title

      Phys. Rev D74(8),084004

      Pages: 4-4

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Is there a black hole minimum mass?2006

    • Author(s)
      Tomohiro Harada
    • Journal Title

      Physical Review D74(8)

      Pages: 84004-84004

    • Data Source
      KAKENHI-PROJECT-18740144
  • [Journal Article] Super-horizon primordial black holes2005

    • Author(s)
      T.Harada
    • Journal Title

      Physical Review D 72

      Pages: 44021-44021

    • Data Source
      KAKENHI-PROJECT-14047212
  • [Journal Article] Weak cosmic censorship in gravitational collapse with astrophysical parameter values

    • Author(s)
      Umpei Miyamoto, Sanjay Jhingan and Tomohiro Harada
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: (accepted)

    • URL

      http://dx.doi.org/10.1093/ptep/ptt027

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Journal Article] Wave Effect in Gravitational Lensing by the EllisWormhole

    • Author(s)
      Chul-Moon Yoo, Tomohiro Harada and Naoki Tsukamoto
    • Journal Title

      Physical Review D

      Volume: YITP-13-15 RUP-13-3, arXiv:1302.7170

    • URL

      http://dx.doi.org/10.1103/PhysRevD.87.084045

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 輻射優勢期に形成される原始ブラックホールのスピンII2021

    • Author(s)
      原田知広、柳哲文、郡和範、古賀泰敬、物部武瑠
    • Organizer
      日本物理学会第76回年次大会
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] ペンローズ過程と粒子衝突2021

    • Author(s)
      原田知広
    • Organizer
      日本物理学会第76回年次大会
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Stability of charged AdS black holes in the Robin boundary2020

    • Author(s)
      Tomohiro Harada
    • Organizer
      Online JGRG workshop 2020
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] 輻射優勢期に形成される原始ブラックホールのスピン2020

    • Author(s)
      原田知広、柳哲文、郡和範、古賀泰敬、物部武瑠
    • Organizer
      日本物理学会2020年秋季大会
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Primordial Black Holes: Mass and Spin2020

    • Author(s)
      Tomohiro Harada
    • Organizer
      7th Korea-Japan Workshop on Dark Energy: Maeda's Universe
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] 原始ブラックホールのスピンについて2019

    • Author(s)
      原田知広、柳哲文、郡和範
    • Organizer
      日本物理学会2019年秋季大会
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] 原始ブラックホールの形成2019

    • Author(s)
      原田知広
    • Organizer
      日本物理学会2019年秋季大会
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] 地平面のないコンパクト天体への重力崩壊におけるバースト的粒子生成2019

    • Author(s)
      國分隆文、原田知広
    • Organizer
      日本物理学会2019年秋季大会
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Particle Creation by Horizonless Compact Objects2019

    • Author(s)
      Tomohiro Harada
    • Organizer
      International Workshop on Astrophysics and Cosmology
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Formation of Primordial Black Holes2019

    • Author(s)
      Tomohiro Harada
    • Organizer
      International Workshop on Astrophysics and Cosmology
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Effect of Inhomogeneity on Primordial Black Hole Forma- tion in the Matter Dominated Era2019

    • Author(s)
      Tomohiro Harada
    • Organizer
      Focus Week on Primordial Black Holes
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Particle Creation In Gravitational Collapse To A Horizon- less Compact Object2019

    • Author(s)
      Tomohiro Harada
    • Organizer
      22nd International Conference on General Relativity and Gravitation
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Particle creation in gravitational collapse to a horizonless compact object2019

    • Author(s)
      Tomohiro Harada
    • Organizer
      29th Workshop on General Relativity and Gravitation in Japan
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Particle creation in gravitational collapse to a horizon- less compact object2019

    • Author(s)
      Tomohiro Harada
    • Organizer
      19th Lomonosov Conference on Elementary Particle Physics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03876
  • [Presentation] Primordial black holes formed in the matter-dominated era2018

    • Author(s)
      Tomohiro Harada
    • Organizer
      International Workshop "Gravity and Cosmology 2018"
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 原始ブラックホールについて2018

    • Author(s)
      原田知広
    • Organizer
      ブラックホール磁気圏研究会2018
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] FLRW解の共形構造の完全分類:線形状態方程式の場合2018

    • Author(s)
      原田知広、Bernard J. Carr、伊形尚久
    • Organizer
      日本物理学会2018年年次大会
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Formation of primordial black holes from primordial fluctuations2017

    • Author(s)
      Tomohiro Harada
    • Organizer
      Focus Week on Primordial Black Holes
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 原始ブラックホールの形成2017

    • Author(s)
      原田知広
    • Organizer
      第30回理論懇シンポジウム
    • Invited
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 物質優勢期における原始ブラックホール形成2017

    • Author(s)
      原田知広、柳哲文 、郡和範、中尾憲一、Sanjay Jhingan
    • Organizer
      日本物理学会2017年年次大会
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Spins of primordial black holes formed in the matter-dominated era2017

    • Author(s)
      Tomohiro Harada
    • Organizer
      International Symposium on Cosmology and Particle Astrophysics "CosPA 2017"
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Spins of primordial black holes formed in the matter-dominated phase of the Universe2017

    • Author(s)
      Tomohiro Harada
    • Organizer
      Workshop on "Gravitational Dynamics and Black Holes"
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 物質優勢期における原始ブラックホール形成2017

    • Author(s)
      原田知広、柳哲文、郡和範、 中尾憲一、Sanjay Jhingan
    • Organizer
      日本物理学会2017年年次大会
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Spins of primordial black holes formed in the matter-dominated era2017

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 27th Workshop on General Relativity and Gravitation in Japan
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] FLRW解について2017

    • Author(s)
      原田知広
    • Organizer
      第19回特異点研究会
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 原始ブラックホール形成と箍予想2016

    • Author(s)
      原田知広
    • Organizer
      第18回特異点研究会
    • Place of Presentation
      立教大学(東京都豊島区)
    • Year and Date
      2016-12-27
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 楕円体の重力崩壊のブラックホール形成条件2016

    • Author(s)
      原田知広、Sanjay Jhingan、郡 和範、中尾憲一、柳哲文
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学(宮崎県宮崎市)
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 原始ブラックホールの非球対称形成モデル:厳密解2016

    • Author(s)
      原田知広、Sanjay Jhingan
    • Organizer
      日本物理学会2016年年次大会
    • Place of Presentation
      東北学院大学(宮城県仙台市)
    • Year and Date
      2016-03-19
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] PBHの非球対称形成モデル2016

    • Author(s)
      原田知広
    • Organizer
      第17回特異点研究会「特異点と時空、および関連する物理」
    • Place of Presentation
      慶應義塾大学(神奈川県横浜市)
    • Year and Date
      2016-01-09
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] ブラックホール周辺:衝突Penrose過程・光子球/音速点対応2016

    • Author(s)
      原田知広
    • Organizer
      ブラックホール磁気圏研究会
    • Place of Presentation
      ホテルマウントレースイ(北海道夕張市)
    • Year and Date
      2016-03-02
    • Invited
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Primordial black hole formation in a matter-dominated universe2016

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 26th Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      大阪市立大学(大阪府大阪市)
    • Year and Date
      2016-10-24
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Correspondence between sonic points of ideal photon gas accretion and photon spheres2016

    • Author(s)
      Tomohiro Harada
    • Organizer
      the 21st International Meeting on General Relativity and Gravitation
    • Place of Presentation
      Columbia University (アメリカ合州国ニューヨーク市)
    • Year and Date
      2016-07-10
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Can an over-spinning Kerr geometry be the source of ultra-high energy cosmic rays and neutrinos?2016

    • Author(s)
      原田知広
    • Organizer
      第17回特異点研究会「特異点と時空、および関連する物理」
    • Place of Presentation
      慶應義塾大学(神奈川県横浜市)
    • Year and Date
      2016-01-09
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 宇宙論的非線形ゆらぎと原始ブラックホール形成2015

    • Author(s)
      原田知広(立教大)、柳哲文(名大)、中間智弘(東大)、古賀恭敬(立教大)
    • Organizer
      日本物理学会2015年年次大会
    • Place of Presentation
      早稲田大学(東京都新宿区)
    • Year and Date
      2015-03-24
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Primordial black hole formation from cosmological fluctuations2015

    • Author(s)
      Tomohiro Harada
    • Organizer
      Hot Topics in General Relativity and Gravitation 2
    • Place of Presentation
      Quy Nhon, Vietnam
    • Year and Date
      2015-08-09
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] High energy particle collision and collisional Penrose process near a Kerr black hole2015

    • Author(s)
      Tomohiro Harada
    • Organizer
      One Hundred Years of Strong Gravity
    • Place of Presentation
      Instituto Superior Tecnico in Lisbon, Lisbon, Portugal
    • Year and Date
      2015-06-10
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Szekeres解の宇宙物理学への応用2015

    • Author(s)
      原田知広、Sanjay Jhingan
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      大阪市立大学(大阪府大阪市)
    • Year and Date
      2015-09-25
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] 原始ブラックホール形成の閾値について2014

    • Author(s)
      原田知広、柳哲文、郡和範
    • Organizer
      日本物理学会第69回年次大会
    • Place of Presentation
      東海大学
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] 漸近的準一様解について2014

    • Author(s)
      原田知広(立教大)、柳哲文(名大)
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      佐賀大学(佐賀県佐賀市)
    • Year and Date
      2014-09-21
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Einstein-Rosen波に対する繰り込み群的アプローチ2013

    • Author(s)
      原田知広、Sanjay Jhingan
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      高知大学
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] 分離宇宙条件の一般化へ向けて2013

    • Author(s)
      原田知広(立教大理・准教授)Bernard J. Carr (ロンドン大クインメアリ校)
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Year and Date
      2013-03-29
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 宇宙分離条件の一般化へ向けて2013

    • Author(s)
      原田知広、Bernard J. Carr
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] UPPER LIMITS OF PARTICLE EMISSION FROM HIGH-ENERGY COLLISION ANDREACTION NEAR A MAXIMALLY ROTATING KERR BLACK HOLE2013

    • Author(s)
      Tomohiro Harada
    • Organizer
      the 20th GR and 10th Amalidi Coference on Gravitatonal Waves
    • Place of Presentation
      University of Warsaw
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] Analytic formula for the threshold of primordial black hole formation2013

    • Author(s)
      Tomohiro Harada
    • Organizer
      The workshop on wormholes and primordial black holes: theories and observations
    • Place of Presentation
      Nagoya University
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] Analytic formula for the threshold of primordial black hole formation2013

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 23rd Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      Hirosaki University
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of particles around a Kerr black hole2013

    • Author(s)
      Tomohiro Harada
    • Organizer
      the Proceedings of the 21st Workshop on General Relativity and Gravitation in Japan
    • URL

      http://www-tap.scphys.kyoto-u.ac.jp/jgrg/proc/JGRG23

    • Place of Presentation
      Hirosaki University, Hirosaki, Japan
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of two general geodesic particle around a Kerr black hole2012

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Organizer
      13th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Stockholm University, Sweeden
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of two general geodesic particles around a Kerr black hole2012

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Organizer
      the 13th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Stockholm University, Stockholm, Sweden
    • Year and Date
      2012-07-17
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Upper limits of particle emission from high-energy collision reaction near a maximally rotating Kerr black hole2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      RESCU SYMPOSIUM ON GENERAL RELATIVITY AND GRAVITATION "JGRG22"
    • Place of Presentation
      University of Tokyo
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of particles around a Kerr black hole and its implication2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      Nishinomiya Yukawa Symposium: New Waves in Gravity and Cosmology
    • Place of Presentation
      Kyoto University
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 高回転ブラックホール付近の高エネルギー粒子衝突による粒子放射に対する上限について2012

    • Author(s)
      原田知広、宗像裕也、宮本雲平
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      The21st Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      Tohoku University, Sendai, Japan
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Upper limits of particle emission from high-energy collisionand reaction near a maximally rotating Kerr black hole2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      the RESCEU SYMPOSIUM ON GENERAL RELATIVITY AND GRAVITATION
    • Place of Presentation
      University of Tokyo, Tokyo, Japan.
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of ISCO particle around a Kerr black hole2012

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Organizer
      13th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Stockholm University, Sweeden
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of an ISCO particle around a Kerr black hole2012

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Organizer
      the 13th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Stockholm University, Stockholm, Sweden.
    • Year and Date
      2012-07-17
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a Kerr black hole and implication2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      Nishinomiya Yukawa Symposium: New Waves in Gravity and Cosmology
    • Place of Presentation
      Kyoto University
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of particles around a Kerr black hole and its implication2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      Gravity and Cosmology 2012, 18 Nov-21Dec
    • Place of Presentation
      Kyoto University, Kyoto, Japan.
    • Year and Date
      2012-11-18
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 高速回転ブラックホール付近の高エネルギー粒子衝突による粒子放射に対する上限について2012

    • Author(s)
      原田知広(立教大理・准教授)、宗像裕也(立教大理D3)、宮本雲平(立教大・先端科学計測センターPD
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学
    • Year and Date
      2012-09-12
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 重力波放射反作用を考慮したときの天体加速器としての Kerr ブラックホール2012

    • Author(s)
      原田知広 立教大理・准教授、木村匡志(京大基研・学振特別研究員PD)
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-27
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 7th International Conference onGravitation and Cosmology
    • Place of Presentation
      Holida Inn Goa, Goa, India.
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of two general geodesic particles around a Kerr black hole2012

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Organizer
      13th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Stockholm University, Sweden
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Upper limits of particle emission from high-energy collisionand reaction near a maximally rotating Kerr black hole2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      RESCEU SYMPOSIUM ON GENERAL RELATIVITY AND GRAVITATION ``JGRG22''
    • Place of Presentation
      University of Tokyo
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a Kerr black hole and its implication2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      Gravity and Cosmology 2012
    • Place of Presentation
      Kyoto University
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a Kerr black hole and its implication2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      Nishinomiya Yukawa Symposium: New Waves in Gravity and Cosmology, 4-6Dec
    • Place of Presentation
      Kyoto University, Kyoto, Japan. (poster and short talk)
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 重力波放射反作用を考慮したときの天体加速器としてのKerrブラックホール2012

    • Author(s)
      原田知広、木村匡志
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] 高速回転ブラックホール付近の高エ ネルギー粒子衝突による粒子放射に対する上限について2012

    • Author(s)
      原田知広、宗像裕也、宮本雲平
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a Kerr black hole and implication2012

    • Author(s)
      Tomohiro Harada
    • Organizer
      Gravity and Cosmology 2012
    • Place of Presentation
      Kyoto University
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] 重力波放射反作用を考慮したときの天体加速器としてのKerrブラックホール2012

    • Author(s)
      原田知広、木村匡志
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-27
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of an ISCO particle around a Kerr black hole2012

    • Author(s)
      Tomohiro Harada and Masashi Kimura
    • Organizer
      13th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Stockholm University, Sweden
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 7th International Conference on Gravitation and Cosmology
    • Place of Presentation
      Holiday Inn Goa, Goa, India.
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 7th International Conference on Gravitation and Cosmology
    • Place of Presentation
      Holiday Inn Goa, Goa, India
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 高速回転ブラックホール付近での天体の高速衝突2011

    • Author(s)
      原田知広、木村匡志
    • Organizer
      日本天文学会春季年会
    • Place of Presentation
      日本天文学会2011年春季年会予稿集(東北関東大台災のための年会中止に伴う特例)
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 21st Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      Tohoku University, Sendai, Japan
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a Kerr black hole2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      the Proceedings of the 21st Workshop on General Relativity and Gravitation in Japan
    • URL

      http://www-tap.scphys.kyoto-u.ac.jp/jgrg/proc/JGRG21.pdf

    • Place of Presentation
      Tohoku University, Sendai, Japan
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] 高速回転ブラックホール付近での天体の高速衝突2011

    • Author(s)
      原田知広(立教大理・准教授)、木村匡志(大阪市大数学研究所・専任研究員)
    • Organizer
      日本天文学会2011年春季年会予稿集(東北関東大震災のための年会中止に伴う特例措置)
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Kerrブラックホール周りでの一般の測地的二粒子の衝突2011

    • Author(s)
      原田知広(立教大理・准教授)、木村匡志(京大基研・学振特別研究員 PD)
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Year and Date
      2011-09-16
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Kerrブラックホール周りでの一般の測地的二粒子の衝突2011

    • Author(s)
      原田知広、木村匡志
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      弘前大学
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 21st Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      Tohoku University, Sendai, Japan
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] Collision of geodesic particles around a Kerr black hole2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      IPMU Workshop on Black Holes
    • Place of Presentation
      IPMU, Kashiwa, Japan
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] High-velocity collision of particles around a rapidly rotating black hole, Vishwa Mimansa : An Interpretative Exposition of the Universe2011

    • Author(s)
      Tomohiro Harada
    • Organizer
      the Proceedings of the 7th International Conference on Gravitation and Cosmology
    • Place of Presentation
      Goa, India
    • Data Source
      KAKENHI-PROJECT-23654082
  • [Presentation] Uniqueness of static spherically symmetric vacuum solutions in the IR limit of nonrelativistic quantum gravity2010

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2010
    • Place of Presentation
      Granada, Spain
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Black hole candidates and the Kerr bound2010

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2010
    • Place of Presentation
      Palacio de Exposiciones yCongresos de Granada, Granada, Spain.
    • Year and Date
      2010-09-09
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Uniqueness of static spherically symmetric vacuum solutions in the IR limit of nonrelativistic quantum gravity2010

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2010
    • Place of Presentation
      Palacio de Exposiciones yCongresos de Granada, Granada, Spain
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] ブラックホール候補天体とKerr限界2010

    • Author(s)
      高橋労太(理研・基礎科学特別研究員)、原田知広(立教大理・准教授)
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      九州工業大学
    • Year and Date
      2010-09-14
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 非相対論的量子重力の赤外極限における静的球対称解2010

    • Author(s)
      原田知広(立教大理・准教授)、宮本雲平(立教大理・ポストドクトラルフェロー)、塚本直樹(立教大理・M2)
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-23
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Black hole candidates and the Kerr bound2010

    • Author(s)
      Tomohiro Harada
    • Organizer
      The20th Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      YITP, Kyoto, Japan
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Black hole candidates and the Kerr bound2010

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2010
    • Place of Presentation
      Granada, Spain
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] 非相対論的量子重力の赤外極限における静的球対称解2010

    • Author(s)
      原田知広、宮本雲平、塚本直樹
    • Organizer
      日本物理学会
    • Place of Presentation
      岡山大学
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Einstein-Rosenwaves and the self-similarity hypothesis in cylindrical symmetry2009

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 19th Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      Rikkyo University, Tokyo, Japan
    • Year and Date
      2009-11-30
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Einstein-Rosen waves and the self-similarity hypothesis in cylindrical symmetry2009

    • Author(s)
      Tomohiro Harada, Ken-ichi Nakao and Brien C. Nolan
    • Organizer
      The 12th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories
    • Place of Presentation
      Unesco Headquarters, Paris, France
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Einstein-Rosen波と円筒対称時空における自己相似仮説2009

    • Author(s)
      原田知広、中尾憲一、B.C.Nolan
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-29
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Einstein-Rosen波と円筒対称時空における自己相似仮説II2009

    • Author(s)
      原田知広(立教大理・准教授)、中尾憲一(大阪市立大・教授)、B.C.Nolan(ダブリン市立大・上級講師)
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      甲南大学
    • Year and Date
      2009-09-10
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Einstein-Rosen waves and the self-similarity hypothesis in cylindrical symmetry2009

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 19th Workshop on General Relativity and GraVitation in Japan
    • Place of Presentation
      Rikkyo University
    • Data Source
      KAKENHI-PROJECT-21740190
  • [Presentation] Self-similar black holes in an accelerated universe2008

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2008
    • Place of Presentation
      スペイン王国サラマンカ市
    • Year and Date
      2008-09-15
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Self-similar black holes in an accelerated universe2008

    • Author(s)
      Tomohiro Harada
    • Organizer
      Spanish Relativity Meeting 2008, 15-19 Sep 2008
    • Place of Presentation
      Hospederia Fonseca Conference Centre, Salamanca, Spain
    • Year and Date
      2008-09-15
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Gravitational collapse of a dust ball from a perspective of loop quantum gravity : an application2008

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 18th Workshop on General Relativity and Gravitation, 17-21 Nov,2008
    • Place of Presentation
      Hiroshima University, Hiroshima, Japan
    • Year and Date
      2008-11-20
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] 重力崩壊の臨界現象の厳密な臨界解2008

    • Author(s)
      原田知広、A.マハジャン
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-24
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] ループ量子重力の観点からの球対称ダスト重力崩壊 : 数値計算2008

    • Author(s)
      原田知広
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      山形大学
    • Year and Date
      2008-09-20
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] 重力崩壊の臨界現象の厳密な臨界解2008

    • Author(s)
      原田知広、A.Mahajan
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-24
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] ループ量子重力の観点からの球対称ダスト重力崩壊:数値計算2008

    • Author(s)
      原田知広、M.Bojowald、R.Tibrewala
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      山形大学
    • Year and Date
      2008-09-23
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Asymptotically Friedmann Self-Similar Solutions with Dark Energy2007

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Organizer
      The 18th International Conference on General Relativity and Gravitation, 8-14 July 2007
    • Place of Presentation
      Sydney Conference Centre, Sydney, Australia
    • Year and Date
      2007-07-12
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] 暗黒エネルギー宇宙における自己相似的ブラックホール2007

    • Author(s)
      原田知広、前田秀基、B.J.カー
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-22
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Self-similar cosmological solutions with dark energy I : formulation and asymptotic analysis2007

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B.J. Carr
    • Organizer
      The 8th International Conference on Gravitation and Astrophysics,29 Aug-1 Sep 2007
    • Place of Presentation
      Nara Women's University, Nara, Japan(poster and short talk,査読有)
    • Year and Date
      2007-08-29
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] 暗黒エネルギー宇宙における自己相似的ブラックホール解の存在可能性について2007

    • Author(s)
      前田秀基、 原田知広、B.J.カー
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-03-26
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Self-similar cosmological solutions with dark energy I:formulation and asymptotic analysis2007

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Organizer
      The 8th International Conference on Gravitation and Astrophysics
    • Place of Presentation
      Nara Women's University, Nara, Japan
    • Year and Date
      2007-08-29
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Black Hole Evaporation in a Friedmann Universe2007

    • Author(s)
      Hiromi Saida, Tomohiro Harada and Hideki Maeda
    • Organizer
      The 8th International Conference on Gravitation and Astrophysics, 29 Aug-1 Sep 2007
    • Place of Presentation
      Nara Women's University, Nara, Japan(poster and short talk,査読有)
    • Year and Date
      2007-08-29
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Asymptotically Friedmann Self-Similar Solutions with Dark Energy2007

    • Author(s)
      Tomohiro Harada, Hideki Maeda and B. J. Carr
    • Organizer
      The 18th International Conference on General Relativity and Gravitation
    • Place of Presentation
      Sydney Conference Centre, Sydney, Australia
    • Year and Date
      2007-07-12
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Self-similar cosmological solutions with dark energy2007

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 17th Workshop on General Relativity and Gravitation, 3-7 Dec, 2007
    • Place of Presentation
      Nagoya University, Nagoya, Japan. (poster and short talk)
    • Year and Date
      2007-12-03
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Black Hole Evaporation in a Friedmann Universe2007

    • Author(s)
      Hiromi Saida, Tomohiro Harada and Hideki Maeda
    • Organizer
      The 8th International Conference on Gravi tation and Astrophysics
    • Place of Presentation
      Nara Women's University, Nara, Japan
    • Year and Date
      2007-08-29
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] ブラックホールに最小質量はあるか?2006

    • Author(s)
      原田知広
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      奈良女子大学
    • Year and Date
      2006-09-23
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Non-existence of self-similar black hole in a universe with a scalar field or quintessence2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 16th Workshop on General Relativity and Gravitation, 27 Nov-1 Dec, 2006
    • Place of Presentation
      Niigata Prefectural Civic Center, Niigata, Japan
    • Year and Date
      2006-11-30
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Singularities and Self-Similarity in Gravitational Collapse2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      an invited plenary talk, Hayashibara Forum on Singularities, 20-23 Nov 2006
    • Place of Presentation
      Insitut des Hautes Etudes Scientifiques, Bur-sur-Yvette, France
    • Year and Date
      2006-11-21
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Black Holes in Scalar Field/Quintessence Cosmology2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 11th Marcel Grossmann Meeting on recent developments in theoretical and experimental general relativity, gravitation, relativistic field theories, 23-29 Jul 2006
    • Place of Presentation
      Berlin Freie Universitaet, Berlin, Germany
    • Year and Date
      2006-07-24
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Naked singularities and self-similarity in gravitational collapse2006

    • Author(s)
      Tomohiro Harada
    • Organizer
      an invited talk, Workshop "From Geometry To Numerics", 20-24 Nov 2006
    • Place of Presentation
      Institut Henri Poincare, Paris, France
    • Year and Date
      2006-11-24
    • Data Source
      KAKENHI-PROJECT-18740144
  • [Presentation] Black holes as particle accelerators: a brief review

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 24th Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      東京大学Kavli IPMU(千葉県柏市)
    • Year and Date
      2014-11-10 – 2014-11-14
    • Data Source
      KAKENHI-PROJECT-26400282
  • [Presentation] Threshold of primordial black hole formation

    • Author(s)
      Tomohiro Harada
    • Organizer
      The 15th Canadian Conference on General Relativity and Relativistic Astrophysics
    • Place of Presentation
      ウィニペグ(カナダ)
    • Year and Date
      2014-05-21 – 2014-05-23
    • Data Source
      KAKENHI-PROJECT-26400282
  • 1.  柳 哲文 (60467404)
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  • 2.  佐々木 節 (70162386)
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  • 3.  ABE Fumio (80184224)
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  • 4.  中村 卓史 (80155837)
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  • 5.  田中 貴浩 (40281117)
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  • 6.  柴田 大 (80252576)
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  • 7.  井岡 邦仁 (80402759)
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  • 8.  大原 謙一 (00183765)
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  • 9.  千葉 剛 (40324602)
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  • 10.  大川 博督 (40633285)
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  • 11.  黒柳 幸子 (60456639)
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  • 12.  KUSENKO ALEXANDER (70817791)
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  • 13.  西條 統之
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  • 14.  TAKAHASHI Tomo
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  • 15.  KOHRI Kazunori
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  • 16.  MIYAMOTO Umpei
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  • 17.  Kinoshita Shunichiro
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  • 18.  中尾 憲一
    # of Collaborated Projects: 0 results
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  • 19.  伊形 尚久
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  • 20.  田越 秀行
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  • 21.  木村 匡志
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  • 22.  古賀 泰敬
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